Question

The theory of spontaneous generation of abiogenesis was disproved by swan flask experiment by:
A. A. R. Wallace
B. Francesco Redi
C. Louis Pasteur
D. A. I. Oparin
E. Sidney Fox

Answer 1

Hint: The origin of life remains an important question to the researchers. It assumed that the earth in its primordial form came into existence some 4.6 billion years ago and the life forms originated on earth about three billion years ago.

Complete answer:
There are plenty of theories when it comes to the discussion of the origin of life on earth such as “Theory of special creation”, “Cosmozoic theory”, “Theory of spontaneous generation or theory of abiogenesis”, “Theory of biogenesis” and “Modern theory of self-assembly. The theory of abiogenesis was proposed by Greek philosophers in 600 B.C. The theory of abiogenesis suggested that life originated from non-living substances spontaneously over a course of time. Father Sudrez is known to propose the theory of special creation stating the presence of some supernatural power responsible for the origin of life on earth. The theory of biogenesis was given by Francesco Redi, Spallanzani, and Louis Pasteur. However, it was Louis Pasteur who disproved the theory of abiogenesis by his swan flask experiment. The entire experiment was based on the observational study as to whether a sterile nutrient broth can spontaneously generate microbial life. This experiment came into an idea as Louis Pasteur made the observation that bacteria grow in an exposed container of meat broth and also if the broth is boiled the growth is not witnessed.
Hence, the correct answer to the given question is option C-Louis Pasteur

Note: Pasteur’s experiment was not able to prove that spontaneous generation never occurred.
Louis Pasteur is a well known French biologist, microbiologist, and chemist. He is well known for his contribution in the field of vaccination, microbial fermentation, and pasteurization.